Prepositions of Time: at, in, on

1) We use the preposition in for years, seasons, months and moments of the day.

in

the twentieth century

1987

the 1880s

spring/ summer

the morning/ the evening

October

2) We use the preposition on for completed dates, days of the week, holiday days.

on

21 April

Christmas Day

Sunday

Saturday night

3) We use the preposition at for a reference point in time.

at

six o'clock

weekends

night

EXERCISE:
1)Do you work ....... Mondays?
2)I have a meeting........9am.
3)They worked in a restaurant ...... 1998
4)We usually play tennis ..... Sunday.
5)There are some the book.....the chair
6)We went to a great party ......Janauary
7) I was born ..... 1968
8)My flight is ..... Monday
9)The English examination is ..... July.
10)Mary is going to the theatre ..... Friday.BY: